Air filtering device designed for installation over an interior vent grill of evaporative coolers



FIG. 1 is a front elevational view of the air filtering device designed for installation over an interior vent grill of evaporative coolers showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is an isometric view thereof. 

The ornamental design for an air filtering device designed for installation over an interior vent grill of evaporative coolers, as shown and described. 